Whip-stock core



UNITED STATES PATENT Crunch",

HENRY S. CUSHMAN, OF MILFORD, MASSACHUSETTS.

WHIP-"STOCK CORE.

SPECIFICATION forming part of Letters Patent No. 378,662, dated February 28, 1888.

Application filed October 31, 1887. Serial No. 253,877.

To all whom it may concern.-

Be it known that I, HENRY S. CUSHMAN, a citizen of the United States, residing at Milford, in the county of Vorcester and State of Massachusetts, have invented certain new and useful Improvements in VVhip-Stock Cores; and I do declare the following to be a full, clear, and exact description of the invention, such as will, enable others skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Figure l is a side view of the heart-piece of whalebone or a suitable wood, tapered as shown. Fig. 2 is a side view of thestrip A, and Fig. 3 a similar view of the strip B, of rawhide, buckskin, or a suitable1eather,as formed or tapered to be applied to the heart-piece. Fig. at is a transverse section of the heartpiece and the strips as applied thereto,on an enlarged scale. Fig. 5 is a transverse section of' the heart-piece as made circular or round and having the strips applied thereto, as shown. Fig. 6 is a side view of the heart'piece as it appears when finished.

This invention relates to improvements in the manufacture of whip-stock cores composed ofwhalebone or wood and rawhide, buckskin, or a suitable leather cemented thereto in the manner hereinafter described.

In carrying out my invention I take a con tinuous piece of whalebone or suitable wood of proper ordesired length--which is tapered to the necessary extent and is square or rectangular in cross-section for the heart-piece a, and apply to three of its sidesviz., b c dby means of cement, a strip, A, of rawhide or buckskin or suitable leather tapered to conform to the taper of the said heart-piece. I next take another piece, B, of rawhide, buckskin, or asuitable leather, also tapered to conform to the (N0 model.)

taper of the heart-piece,and apply it by means of cement to the side 6 of the heart'piece and to the laps x x of the piece A, as shown in Fig. 4. Thus it will be seen that the sides a e of the heart piece are each covered by a single thickness of the rawhide or leather, while the sides I) d are covered by a double thickness of the same.

A whip-core made as hereinbefore described is very strong and one easily manufactured, and the heart-piece will be supported to bet ter advantage by having the covering in two pieces,applied as described, than if the leather covering is in one piece and wound around the heart'piece and lapped upon itself. IVhen the heart-piece is made circular or round in transverse section, the strip Ais made to cover three-fourths,'or thereabout, of the circumference thereofiand the strip 13 covers the fourth of said circumference uncovered by the strip A and laps upon said strip, as shown in Fig. 5.

I am aware of a whip-stock core composed of a boneccnter about which is Wrapped in several folds a single piece of rawhide. By using two pieces of rawhidelapping each. other, as I do, the covering lies smoother and there is no tendency to warp or twist. On two sides the covering is thicker than on the other two, 

